Brake caliper oil drainage bolt testing device

Abstract

The utility model discloses a brake caliper oil drainage bolt testing device which comprises an oil drainage assembly used for being connected with a vehicle brake caliper, an electric control ball valve arranged on one side of the oil drainage assembly, and a connecting piece arranged between the oil drainage assembly and the electric control ball valve and used for communication. The liquid storage bag is arranged on the side, away from the connecting piece, of the electric control ball valve and used for being matched with the electric control ball valve to exhaust gas, through effective fusion of the electric control ball valve convenient and fast to open and close and the oil drainage assembly, the operation mode of disconnecting a loop is converted into the electric control ball valve switch from the mode that an oil pipe is loosened through an open spanner, and operation is convenient and fast. The liquid storage bag is combined for use, the brake fluid can be prevented from polluting a test road or tires, the sealing joint is designed, normal pressure buildup of a caliper piston cylinder when the ball valve is closed is guaranteed, it is also guaranteed that the brake fluid does not leak when the electronic control ball valve is opened, air cannot enter a brake pipeline after a main cylinder returns after braking is finished, the emptying step in the test process is omitted, and the test efficiency is improved. Braking tests can be continuously carried out.

Description

Technical Field

[0001] This utility model relates to the field of vehicle brake caliper testing technology, and in particular to a brake caliper drain plug testing device. Background Technology

[0002] The national standards for automotive braking systems (GB / T 12676 and GB / T 21670) require that, in the partial failure test of the service braking system, the emergency braking system or the part of the service braking system unaffected by the failure must be able to stop the vehicle according to the requirements of emergency braking when other failures occur in the service braking system (such as failure, partial or complete leakage of stored energy).

[0003] During the process of conducting a preliminary assessment of braking regulations, a common method is to disconnect the brake fluid line of a certain circuit or loosen the drain plug on the brake caliper before braking, so that the single circuit cannot store and transmit energy normally.

[0004] Directly disconnecting the brake lines or loosening the bleed bolts presents several problems. First, before simulating a brake circuit failure test, the brake lines are disconnected under the vehicle using an open-end wrench or the bleed bolts on the brake calipers are loosened to simulate a failure. Second, premature disconnection causes brake fluid to leak from the lines and drip onto the test surface, affecting driving safety. Third, during the brake circuit failure test, pressing the brake pedal simultaneously powers all four wheel-side lines. Because the simulated failure lines are open, brake fluid is sprayed directly onto the wheel rims, contaminating the tires and reducing their adhesion coefficient, thus affecting driving safety and test results. Fourth, releasing the brake pedal after depressing the pedal causes the master cylinder to retract, opening the brake lines and allowing air to enter, requiring bleeding before further testing. Fifth, after disconnecting the circuit, the brake pedal can only be pressed during the test; braking is impossible during the driving process from disconnection to testing, impacting driving safety. Finally, the entire process consists of three steps: disconnecting the circuit, braking test, and bleeding / restoration, making continuous braking tests impossible. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a brake caliper bleed bolt testing device, which aims to solve the current problem that brake caliper bleed bolts cannot be continuously tested.

[0006] This utility model provides a brake caliper bleed bolt testing device, which includes a bleed assembly for connecting a vehicle brake caliper, an electronically controlled ball valve disposed on one side of the bleed assembly, a connector disposed between the bleed assembly and the electronically controlled ball valve for communication, and a reservoir bag disposed on the side of the electronically controlled ball valve away from the connector for cooperating with the electronically controlled ball valve to vent air.

[0007] By repeatedly opening the electronically controlled ball valve, the piston cylinder of the braking circuit is kept in a continuous state with the reservoir bag. When the brake pedal is pressed, the brake pump pressurizes the piston cylinder, and the oil flows directly into the reservoir bag, preventing the piston cylinder from maintaining pressure normally and achieving the purpose of depressurization.

[0008] The above-mentioned efficient integration of the conveniently switchable electronically controlled ball valve and the drain assembly transforms the circuit disconnection method from loosening the oil line with an open-end wrench to switching the electronically controlled ball valve, making operation convenient. When used with a reservoir bag, it prevents brake fluid from contaminating the test road or tires. The sealed joint design ensures proper pressure build-up in the caliper piston cylinder when the ball valve is closed and prevents brake fluid leakage when the electronically controlled ball valve is open. After braking, the master cylinder retraction does not cause air to enter the brake lines, eliminating the need for a bleed step during testing. This allows for continuous braking tests, solving the current problem of not being able to continuously perform braking tests with the brake caliper drain bolt.

[0009] In addition, the brake caliper drain bolt testing device proposed according to the embodiments of this utility model may also have the following additional technical features:

[0010] Furthermore, the drain assembly includes a drain bolt connected to the vehicle brake caliper, a drain conduit disposed on the side of the drain bolt away from the vehicle brake caliper, and a first hose tail sleeve disposed on the side of the drain conduit away from the drain bolt.

[0011] Furthermore, the connector includes a first hose for connecting the first hose tail sleeve, a second hose tail sleeve disposed on the side of the first hose away from the first hose tail sleeve, and an assembly head fixedly connected to the side of the second hose tail sleeve away from the first hose.

[0012] Furthermore, the electrically controlled ball valve includes a ball valve, a front fixed pipe and a rear fixed pipe disposed on both sides of the ball valve, and a connector sleeved on the front fixed pipe for connecting the assembly head.

[0013] Furthermore, the connector is screwed into the assembly head.

[0014] Furthermore, the liquid storage bag includes a bag body, a second rubber tube extending from the bag body toward the side near the rear fixed tube and engaging with it, and a plug embedded in the side of the bag body away from the second rubber tube. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a brake caliper drain bolt testing device proposed in this embodiment of the present invention;

[0016] Figure 2This is a partially disassembled structural diagram of the drain assembly and connector in a brake caliper drain bolt testing device proposed in this embodiment of the present invention.

[0017] Figure 3 This is a partial structural diagram of the electrically controlled ball valve in a brake caliper drain bolt testing device proposed in this embodiment of the present invention;

[0018] Figure 4 This is a partial structural diagram of the fluid storage bag in a brake caliper drain bolt testing device proposed in this embodiment of the present invention.

[0019] Explanation of key component symbols:

[0020]

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description of it will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 4The image shows a brake caliper drain bolt testing device according to an embodiment of this utility model. It includes a drain assembly 1 for connecting the vehicle brake caliper, an electronically controlled ball valve 5 disposed on one side of the drain assembly 1, a connector disposed between the drain assembly 1 and the electronically controlled ball valve 5 for communication, and a reservoir bag 6 disposed on the side of the electronically controlled ball valve 5 away from the connector for cooperating with the electronically controlled ball valve 5 to release air. By repeatedly opening the electronically controlled ball valve 5, the piston cylinder of the brake circuit and the reservoir bag 6 are kept in a continuous state. When the brake pedal is pressed, the brake pump pressurizes the piston cylinder, and the oil flows directly into the reservoir bag 6, so that the piston cylinder cannot continue to be pressurized normally, thus achieving the purpose of depressurization.

[0026] Furthermore, the drain assembly 1 includes a drain bolt 11 connected to the vehicle brake caliper, a drain conduit 12 disposed on the side of the drain bolt 11 away from the vehicle brake caliper, and a first hose tail sleeve 13 disposed on the side of the drain conduit 12 away from the drain bolt 11. The connector includes a first hose 2 for connecting the first hose tail sleeve 13, a second hose tail sleeve 3 disposed on the side of the first hose 2 away from the first hose tail sleeve 13, and an assembly head 4 fixedly connected to the side of the second hose tail sleeve 3 away from the first hose 2. The electronically controlled ball valve 5 includes a ball valve 53, a front fixing tube 52 and a rear fixing tube 54 disposed on both sides of the ball valve 53, and a connector 51 sleeved on the front fixing tube 52 for connecting the assembly head 4. The connector 51 is screwed into the assembly head 4. The reservoir bag 6 includes a bag body 62, a second hose 61 extending from the bag body 62 toward the side near the rear fixing tube 54 and engaging with it, and a plug 63 embedded on the side of the bag body 62 away from the second hose 61.

[0027] It should be noted that the outer surface of the drain bolt 11 is provided with external threads, which mate with the threaded hole of the vehicle's brake caliper. The flared end of the drain bolt 11 mates with the tapered hole of the vehicle's brake caliper to achieve a seal while simultaneously engaging. The drain guide 12 at the tail end of the drain bolt 11 is made of a double-layer metal welded steel pipe with a diameter of φ4.67×0.7mm. The drain guide 12 is riveted to the first hose 2 via a first hose end sleeve 13. The other end of the first hose 2 is riveted to a second hose end sleeve 3. The second hose end sleeve 3 and the threaded assembly head 4 can be designed as a single piece, such as... Figure 2 As shown; in some optional embodiments, the solenoid ball valve 5 is equipped with an electromagnetic switch valve, which can remotely control the opening and closing of the ball valve via a wireless switch. The openings at both ends of the solenoid ball valve 5 are respectively welded with φ4.67×0.7mm double-layer metal rolled steel pipes, namely the front fixed pipe 52 and the rear fixed pipe 54. The front fixed pipe 52 is provided with a connector 51, which is connected to the assembly head 4 by screw connection. In addition, the rear fixed pipe 54 at the other end of the solenoid ball valve 5 is connected to the liquid storage bag 6. The liquid storage bag 6 is made of transparent corrosion-resistant material with an outer shape of 100×100mm. In some optional embodiments, it can be made of PV or PC rubber.

[0028] In practical implementation, step one: Install the brake caliper drain bolt testing device of this application on the brake calipers of the four wheels of the vehicle, such as... Figure 4 As shown.

[0029] Step Two: Perform brake bleed operation. During bleeding, repeatedly depress the brake pedal to force air from the brake lines into the brake caliper piston cylinder. While keeping the brake pedal depressed, electronically open the ball valve 5. The air and brake fluid in the piston cylinder will be released into the reservoir 6. Then close the ball valve 53. Repeat the bleeding process multiple times until no air bubbles are visible in the brake fluid flowing into the reservoir after opening the ball valve 53. Throughout the bleeding process, the end cap 63 of the reservoir 6 remains closed and oriented vertically upwards.

[0030] Step 3: After the evacuation is complete, close the ball valve 53, open the end plug of the liquid storage bag 6, and squeeze the liquid storage bag 6 to expel the excess air.

[0031] Step 4: Perform a circuit failure braking test. To simulate a brake circuit failure, open the ball valve 53 of the designated brake circuit and keep the piston cylinder of the brake circuit connected to the reservoir 6. After pressing the brake pedal, the brake pump pressurizes the piston cylinder, and the oil flows directly into the reservoir 6, preventing the piston cylinder from maintaining pressure normally. It should be noted that pressing the brake pedal to pressurize the piston cylinder is something that those skilled in the art can understand, and will not be elaborated on here.

[0032] Next, based on step four, the method of using the brake caliper drain plug testing device in the brake test is as follows: Before the brake test, open the ball valve switch of the circuit to be simulated as a failure circuit. At this time, the brake caliper piston cylinder of this circuit forms a passage with the reservoir bag 6, and the brake test is performed, including the following:

[0033] First, when the brake pedal is depressed, the master cylinder is pressurized, and the energy is transferred to the brake caliper piston cylinder through the pipeline. Because the piston cylinder and the reservoir 6 are in a closed circuit, the piston cylinder cannot store high-pressure brake fluid, and the fluid flows directly into the reservoir 6. The piston cylinder does not push the brake pads to generate braking force. However, in the circuit where the ball valve 53 is not open, the ball valve 53 is in the closed state, and the piston cylinder can normally pressurize and push the brake pads, squeezing the brake disc to provide braking force.

[0034] Secondly, after releasing the brake pedal, due to the negative pressure, the brake fluid stored in the caliper piston cylinder flows back to the master cylinder. Because the piston cylinder and the reservoir 6 are in a continuous state, the brake fluid in the reservoir 6 flows back to the master cylinder. Since the air in the reservoir 6 has been expelled during purging, no air will enter the brake lines. At this time, simply closing the ball valve 53 will allow the brake circuit to resume pressure normally. Multiple simulated circuit failure braking tests can be performed. Before and after each test, simply open or close the ball valve of the circuit to be tested.

[0035] In summary, the effective integration of the conveniently switchable electronically controlled ball valve 5 and the drain assembly 1 transforms the circuit disconnection operation from loosening the oil pipe with an open-end wrench to switching the electronically controlled ball valve 5 on and off, making operation convenient. When used in conjunction with the reservoir bag 6, it prevents brake fluid from contaminating the test road or tires. The sealed joint design ensures normal pressure build-up in the caliper piston cylinder when the ball valve is closed, and also prevents brake fluid leakage when the electronically controlled ball valve 5 is open. After braking, the master cylinder retraction does not cause air to enter the brake lines, eliminating the need for a purging step during testing. This allows for continuous braking tests, solving the current problem of not being able to continuously perform braking tests with the brake caliper drain bolt.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for testing brake caliper drain bolts, characterized in that, It includes a drain assembly for connecting a vehicle brake caliper, an electronically controlled ball valve disposed on one side of the drain assembly, a connector disposed between the drain assembly and the electronically controlled ball valve for communication, and a reservoir bag disposed on the side of the electronically controlled ball valve away from the connector for cooperating with the electronically controlled ball valve to vent air. By repeatedly opening the electronically controlled ball valve, the piston cylinder of the braking circuit is kept in a continuous state with the reservoir bag. When the brake pedal is pressed, the brake pump pressurizes the piston cylinder, and the oil flows directly into the reservoir bag, preventing the piston cylinder from maintaining pressure normally and achieving the purpose of depressurization.

2. The brake caliper drain bolt testing device according to claim 1, characterized in that, The drain assembly includes a drain bolt connected to the vehicle brake caliper, a drain conduit disposed on the side of the drain bolt away from the vehicle brake caliper, and a first hose tail sleeve disposed on the side of the drain conduit away from the drain bolt.

3. The brake caliper drain bolt testing device according to claim 2, characterized in that, The connector includes a first hose for connecting the first hose tail sleeve, a second hose tail sleeve disposed on the side of the first hose away from the first hose tail sleeve, and an assembly head fixedly connected to the side of the second hose tail sleeve away from the first hose.

4. The brake caliper drain bolt testing device according to claim 3, characterized in that, The electrically controlled ball valve includes a ball valve, a front fixed pipe and a rear fixed pipe disposed on both sides of the ball valve, and a connector sleeved on the front fixed pipe for connecting the assembly head.

5. The brake caliper drain bolt testing device according to claim 4, characterized in that, The connector is screwed into the assembly head.

6. The brake caliper drain bolt testing device according to claim 5, characterized in that, The liquid storage bag includes a bag body, a second rubber tube extending from the bag body toward the side near the rear fixed tube and engaging with it, and a plug embedded in the bag body on the side away from the second rubber tube.

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